Free ROAS & Ad Spend Calculator
Calculate your return on ad spend, cost per acquisition, and profit per conversion. Compare your numbers to industry benchmarks for Facebook, Google, and TikTok. Plan campaigns with budget estimates based on real data.
Why Most ROAS Calculators Are Useless
Most ROAS calculators online do exactly one thing: divide revenue by ad spend. That tells you nothing useful on its own. A 5:1 ROAS sounds great until you realize your product margins are 15% and you're actually losing money on every sale.
This calculator includes break-even ROAS (so you know the minimum you need to be profitable), CPA analysis (so you know what each sale actually costs), platform benchmarks (so you know if your numbers are good or bad for your category), and a campaign planner (so you can estimate budget before spending a dollar).
Three Tools in One
ROAS Calculator
Enter your product cost, selling price, ad spend, and conversions. See ROAS, CPA, profit per conversion, and total profit. Compare against benchmarks for your platform and category. Instantly know if you're above or below break-even.
Campaign Planner
Work backwards from a revenue target. Enter how much you want to make, your margins, and your ad platform. Get estimated ad budget, expected clicks and conversions, and the maximum CPC you can afford, all based on industry averages for your retail category.
Benchmark Database
Full benchmark tables for Facebook, Google Search, Google Shopping, and TikTok across 10 retail categories. CPC, CTR, conversion rate, ROAS, and average order value. Break-even ROAS table by profit margin. Key formulas explained.
Platform Differences That Matter
Google Shopping has the highest ROAS (avg 6.3:1) because shoppers have high purchase intent. They searched for a product, saw a photo and price, and clicked. That is a buyer, not a browser.
Facebook sits in the middle (avg 3.7:1). It excels at discovery and retargeting. Your creative quality matters more here than on Google because you're interrupting a scroll, not answering a search.
TikTok looks lowest (avg 2.6:1) but that is partly because it is newer, partly because it drives upper-funnel discovery that converts later outside the attribution window. Beauty and food brands consistently outperform other categories on TikTok.
New accounts underperform. Expect 30-50% below benchmark ROAS in your first 90 days on any platform. The algorithm needs data to learn who converts. Budget for this learning period rather than pulling the plug after 2 weeks.
Ads Bring Traffic. Mika Converts It.
The conversion gap. You optimize your ads to bring qualified traffic. But once visitors land on your site, the experience is the same static page for everyone. No personalization, no guidance, no one to answer questions at 11pm on a Tuesday.
Where Mika fits. Mika is a sales assistant that lives on your website 24/7. It learns what works for your specific visitors and adapts its approach in real time. When a visitor from a Facebook ad lands on your product page, Mika is already there to help them find the right size, answer shipping questions, or capture their contact info for follow-up.
Better ROAS without spending more on ads. If your conversion rate goes from 2% to 3%, your effective ROAS improves by 50% without changing your ad budget. That's what Mika does: it converts the traffic you're already paying for.
Frequently Asked Questions
What is ROAS?
ROAS (Return on Ad Spend) is your revenue divided by your ad spend. A 4:1 ROAS means you earned $4 in revenue for every $1 spent on ads. It tells you how efficiently your ads generate revenue, but not necessarily profit. You need to factor in product cost to determine if you're actually making money.
What is a good ROAS?
It depends on the platform and your margins. On Facebook, 4-5:1 is considered good. On Google Search, 5-8:1 is good. On Google Shopping, 6-8:1 is good. On TikTok, 2-3:1 is good (newer platform with less intent). But the real number that matters is your break-even ROAS: if you have 40% margins, you need at least 2.5:1 ROAS to break even.
What is break-even ROAS?
Break-even ROAS is 1 divided by your profit margin. At 50% margin, your break-even is 2:1. At 30% margin, it's 3.33:1. At 20% margin, it's 5:1. Any ROAS above your break-even is profit. Any ROAS below it means you're losing money on every ad dollar, even though you're generating revenue.
How does the campaign planner work?
Enter your monthly revenue target, profit margin, ad platform, and retail category. The planner uses industry benchmark data (CPC, conversion rate, ROAS) to estimate how much you'd need to spend on ads, how many clicks and conversions to expect, and the maximum CPC you can afford while staying profitable.
Where do the benchmark numbers come from?
Benchmarks are compiled from published industry sources including WordStream, Databox, Revealbot, and platform case studies. They represent averages across many advertisers. Your results will vary based on creative quality, targeting, landing page experience, and competition. New ad accounts typically underperform benchmarks by 30-50% in the first 90 days.
Should I look at ROAS or CPA?
Both. ROAS tells you the efficiency of your ad spend in generating revenue. CPA (Cost Per Acquisition) tells you what each sale costs in ad dollars. ROAS is better for comparing across platforms and campaigns. CPA is better for checking if individual sales are profitable after product cost. This calculator shows both.
Why is my ROAS different from what the ad platform reports?
Ad platforms use different attribution windows and models. Facebook defaults to 7-day click / 1-day view. Google uses 30-day click. TikTok uses 7-day click / 1-day view. Platforms also tend to over-count conversions. For the most accurate ROAS, compare the ad platform's reported conversions against your actual sales data from Shopify, your POS, or your bank account.
Your Ads Bring Them In. Mika Closes the Deal.
Every visitor from a paid ad is money you've already spent. Mika makes sure that investment pays off by engaging shoppers the moment they arrive, helping them find what they need, and capturing their info before they bounce.
See How Mika Works for Retailers